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Figure 18. Decision tree to predict mortality
Figure 19. Results of predictive model
the graphs for length of stay and total charges; figures 26 and 27 have the graphs restricted to level 3
and above.
Note that in the above two figures, there is a considerable difference in levels 1 and 2, with the prob-
ability of low cost and a length of stay of 3.5 days or less that is greater for level 1 compared to the other
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